Of course they work...but is not something of 1 month, 2 month, 3 month...it takes years. You have to train your penis just like your body...If you wanna have a perfect body, you probably need 3-5 years of a good lifestyle of excersice, nutrition and rest. The penis is the same. I train mine from about 5 years. That doesn't mean that i have a hose...but i have an over 8in penis, with big veins, rock like erections, can shoot over 2-3 feet at least 5 shoots, you lear how to control your ejaculation, etc....I just take care of my friend as i take care of my body..